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- Title
不同流态下织构化动压滑动轴承润滑特性研究.
- Authors
吴舟; 赵建新; 毛亚洲
- Abstract
In order to explore the lubrication and load-bearing characteristics of dynamic sliding bearings under different flow states, taking the textured hydrodynamic journal bearing as the object, based on Ng-Pan turbulent lubrication theory, a model of textured hydrodynamic journal bearing under various flow regime was established, and the influence of oil film flow regime, microtexture and bearing structural parameters on oil film pressure and bearing capacity of hydrodynamic journal bearing were analyzed. The result shows that the turbulent flow regime can effectively improve the oil film pressure of textured hydrodynamic journal bearing, the critical Reynolds number decreases with the increase of clearance ratio, and increases with the increase of eccentricity; under various flow regimes, the bearing capacity of textured bearing gradually decreases with the increase of pit diameter and film thickness, fluctuates with the increase of spacing, and increases with the increase of rotating speed, eccentricity and aspect ratio, and the bearing capacity of turbulent flow regime is much higher than that of the laminar flow regime.
- Subjects
TURBULENT flow; FILM flow; JOURNAL bearings; TURBULENCE
- Publication
Machine Tool & Hydraulics, 2023, Vol 51, Issue 17, p190
- ISSN
1001-3881
- Publication type
Article
- DOI
10.3969/j.issn.1001-3881.2023.17.031